A Ride on the NH Ice Cream Trail to Sub Zero, Nashua, NH. Sub Zero is the second of the newfangled Liquid Nitrogen inspired ice cream bars on the trail. Ride begins and ends at North School, Londonderry, NH parking at Londonderry Rail Trail. Begin your ride with breakfast at the Bacon Barn? Head out towards the Manchester Regional Airport. Then over the newest Merrimack River bridge into Merrimack, NH to find Twin Bridge Park. From there back roads lead to the site of an old Covered Bridge, but only the new bridge is there today. Keep on to Nashua Community College. Next-door is the Sub Zero ice cream spot. Despite the 11 opening time on the web site, they open at 12. Kill time riding around the area, maybe find the Nashua Airport and watch planes for a while, or just sit in shade on campus. More suburban back roads bring you back into Merrimack, home of Merrimack Anheuser Busch brewery. And Clydesdales. Time your visit right and you could meet them. Instead I was treated to a 'stang show on the lawn on a Sunday. Matthew Thornton lived here, it's a Dunkin' Donuts now. The 1915 McGaw bridge is newly replaced. Found the fifth penny of the ride series with 3.5 miles to go....